Claims
- 1. A variable speed two-cycle crankcase compression internal combustion engine comprising a cylinder, a piston movable in the cylinder, a fuel intake system including an intake tract at one side of the cylinder and having reed valve means for controlling the flow through the intake tract, and said intake system including porting in the cylinder wall and in the piston located at the same side of the cylinder as the intake tract, .Iadd.the intake tract, the reed valve means and the intake system porting in the cylinder wall all being located to confront the bottom dead center position of the piston, .Iaddend.the piston and the cylinder and piston porting being located and proportioned axially of the cylinder to provide flow channel means of substantial cross sectional flow area between the intake tract and the crankcase of the engine throughout the entire cycle of the engine including the bottom dead center position of the piston and thereby provide uninterrupted fuel intake during the stroke of the piston from bottom dead center to top dead center position, .Iadd.the piston porting including at least one port opening and every such piston port opening being positioned axially of the piston so that substantially the entire flow area of the piston port opening communicates with the cylinder porting in bottom dead center position of the piston, .Iaddend.and a fuel transfer system for transferring fuel from the crankcase of the engine to the combustion side of the piston including a transfer passage communicating with the crankcase and having a transfer port through the cylinder wall and axially positioned to be closed by the piston in the region of top dead center position of the piston, said transfer port being offset from the cylinder and piston intake porting circumferentially of the cylinder so that a fuel flow path is provided in the transfer system from the crankcase to the cylinder at the combustion side of the piston independently of the intake tract.
Parent Case Info
The present application is a division of my application Ser. No. 375,065, filed June 29, 1973, .[.now.]. .Iadd.and issued Sept. 16, 1975 as .Iaddend.U.S. Pat. No. 3,905,340.Iadd., .Iaddend.which in turn is a continuation-in-part of my prior application Ser. No. 282,734 filed Aug. 22, 1972, .Iadd.abandoned, .Iaddend.and of my prior application Ser. No. 361,407 filed May 8, 1973, .[.both now.]. abandoned.
US Referenced Citations (3)
Foreign Referenced Citations (2)
Number |
Date |
Country |
802733 |
Feb 1951 |
DEX |
1194635 |
Jun 1965 |
DEX |
Non-Patent Literature Citations (4)
Entry |
Motorcycle, "Technical," by Vic Willoughby published Jan. 19, 1972, p. 9, Great Britain. |
Schnelle Motoren Seziert und Frisient; Helmut Hutten, 1966, pp. 196-226. |
Motor Cycle World, Aug. 1968, "Reed Valve Lobito/Van Tech.," pp. 18-23. |
Kawasaki Technical Review, Kawasaki KT-28, Apr. 1, 1969, pp. 44-50. |
Related Publications (1)
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Number |
Date |
Country |
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361407 |
May 1973 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
375065 |
Jun 1973 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
282734 |
Aug 1972 |
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Reissues (1)
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Number |
Date |
Country |
Parent |
416213 |
Nov 1973 |
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